FAULTS. 5t 



here exposed shows 4 sheets of trap, with layers of sandstone between 

 and sandstone above and below, and following the dip of the beds 

 (north-west, 15 ). The sheets of trap are irregularly connected at 

 intervals, so as to present a roughly reticulated structure ; the thick- 

 ness of the sheets is also very variable, from 2 and 3 feet to as much 

 as 30 feet in places. These sheets come to the surface on each side 

 of the stream where they form a wide dyke. 



The complicated dyke north of Omerdo (E. Lon. 78 22') 

 Dykes connected with appears to pass up into the long superficial sheet 

 superficial trap. f trap cover i n g the hills to the north-east, but 



unfortunately there is a quartz vein at this point and the actual junc- 

 tion is covered with debris, but I think there can be no doubt that the 

 two are connected. The dyke which crosses the Sookree river 

 (E. Lon. 78° 49') was traced almost into the superficial trap of the 

 hill to the east, but the talus here again prevented my seeing the ac- 

 tual junction. The dyke crossing the Ghatamalee river by Titra and 

 Dudi (E. Lon, 78 53') also passes at each end into the superficial 

 trap. 1 In the Sukli stream above Pagara (E. Lon. 7S 48') there is 

 a very fine example of radiating columnar structure in the trap. The 

 columns are roughly hexagonal and vary in size from 7 inches to 1 foot 



10 inches across, 



§ 19. — Faults. 



The great number of the faults in this area have the down-throw 

 to the north. The exceptions are the Pench 

 and Machna faults. Besides these two and those 

 described by Mr. Medlicott in the Shahpur field there is the well de- 

 fined Saleye fault separating the Hingladevi and Kanhan coal-fields, 

 which brings the Moturs into contact with the Talchirs. Further 

 west of this there is a run of quartzose induration which starting in 

 the Moturs south of Bhakra forms the Motur-Barakar boundary for 



some distance, and along the same line the 

 Pothia fault. t _ . , , , ? 



Moturs are again faulted into contact with the 



1 See Mem. Geol. Surv. India, Vol. X, p, 179. 



( 5> ) 



